What causes the intermittent sound issue in Superb's audio speakers?

[Isabela]

Superb's audio speakers may produce intermittent sound due to the following reasons: Poor sealing leading to moisture: Although the speaker interior is enclosed, if the seal is not tight, moisture may enter during car washing or water vapor may exist in the internal space. This vapor can easily cause contact point dampness, resulting in malfunction. Poor contact at electromagnetic coil terminals: Some speakers use aluminum rivets for pressure connection of enameled wire terminals in the internal electromagnetic coil instead of secure welding. If the insulating varnish on the wire ends isn't properly treated or the rivet connection is loose, it may cause intermittent contact failure, leading to poor speaker performance. This is a manufacturing defect and can only be resolved by replacement. Contact point erosion: Prolonged horn usage can cause contact point erosion, increasing resistance. This reduces current flow through the electromagnetic coil, weakening magnetic attraction and preventing proper armature movement for diaphragm vibration. This results in hoarse sound or complete failure. However, momentary strong current during horn activation may temporarily overcome the resistance, causing intermittent functionality.